The fact that European airlines have been recipients of large amounts of state aid in the recent past also heightens the potential for further conflict between Brussels and national governments over agreeing swiftly on ash-related compensation.
One factor behind that more optimistic outlook results from the fact that the region, including greater Baltimore, is home to many of the biggest military contractors, beneficiaries of the recent emphasis on heightened national security.
Among the recent events that have heightened tensions are an Afghan soldier's recent killing of French troops that led the French to move up their withdrawal date, and outrage over a video that showed four American Marines urinating on bodies that were said to be those of Taliban fighters.
The recent lab mishaps have heightened concerns about the risks of so-called gain-of-function experiments that modify dangerous influenza strains to spread more easily in mammals.
The recent economic recession has heightened awareness regarding the effects of unemployment on health care utilization and health outcomes.
Market risk has been heightened by the recent recession.
Concern also heightened with the recent discovery that the 1918 flu pandemic was apparently caused by a bird flu that jumped directly into humans.
Gay groups are reacting with deeply mixed emotions, heightened by the recent triumphs (Iowa) and losses (California) in efforts to legalize gay marriage.
The debate has been heightened by the recent string of tax "inversion" deals by US companies buying overseas to get access to a lower tax rate.
Mr. Van Wagenen said that public reaction to Mr. Trantino may have been heightened by the recent killing of a law enforcement officer in Washington.
